Under the Sixth Amendment Strickland standard for effective assistance of counsel, “constitutionally competent counsel would have advised [the defendant] that his conviction for drug distribution made him subject to automatic deportation.”

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Adopts a brightline rule that a fourteen-day break in Miranda custody ends the presumption of involuntariness established in Edwards v. Arizona for responses to police-initiated questioning after a subject has invoked the right to have Miranda counsel present during interrogation; a subject incarcerated for an unrelated crime is not in Miranda custody for purposes of this fourteen-day rule.

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Defendant’s Sixth Amendment public trial right requires that jury selection be open to the public.

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Admission of government lab technicians’ sworn “certificates of analysis” that substance taken from defendant was cocaine violated defendant’s Sixth Amendment Confrontation Clause right; the certificates were “affidavits” and within the “core class of testimonial statements” defined in Crawford v. Washington.

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Overrules Michigan v. Jackson holding that once a suspect has claimed the Sixth Amendment right to a lawyer, any later waiver of that right during police questioning would be invalid, unless the suspect initiates communication with the officers.

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